EMMC-5.1协议标准

EMMC-5.1协议标准， Changes from version 5.01 to 5.1  Added Command Queuing  Added Enhanced Strobe in HS400 Mode  Added Cache Barrier  Added Cache Flushing report  Added RPMB Throughput Improve. Support write data size 8KB (thirty two 512B frames)  Added Background Operation Control  Added Secure Write Protection  Added Host Controller Interface for Command Queuing as normative reference  Clarification on HS200/HS400 VT  Edit to support v5.1 in EXT_CSD_REV[192]  Fixed typos, cross references and formatting  Generated new figures to improve images quality and correct errors